I've come up with some concepts from those scribbles I did the other day. I also wanted to use my new markers!
I tried her in a shirt first, but then added a jacket and colour. I definitely found the parts to exaggerate were her massive hoop earrings and an awkward looking, leaning sort of pose. As for the face, she has quite a large chin, which I probably could have done a bit bigger in these sketches. She also has quite alot of attitude, so want to get that across. I need to get more concepts done, because there are parts of her I like and don't like. I also need to tie her design in with the Doctor's, so will do more scribbling tomorrow.